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Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In real-time rendering, the burden of data transi miss ion, data storage, data processing influence the real-time rendering speed. Based on this, this paper proposed the algorithm of embedded zerotree coding based on fast DCT and LOD to realize progressive compression and render the terrain in real time. First, it used fast discrete cosine transform ( DCT) to process the terrain data, then clustered the coefficients. Finally, it used the embedded zero tree coding to process the coefficients. The experiments show that this algorithm can compress terrain data efficiently, reduce the burden of computer, increase the frame rate of 20% , which is in line with visual feature. [ABSTRACT FROM AUTHOR]

Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)